import { LitElement } from 'lit';
/**
 * USA Base Template
 *
 * Foundation template that provides the standard USWDS page structure.
 * All other templates extend or compose this base template.
 *
 * **Template Structure (from USWDS):**
 * - Skip navigation link
 * - Government banner
 * - Header
 * - Main content
 * - Footer
 * - Identifier
 *
 * **Architecture Note:**
 * Uses Light DOM (no Shadow DOM) to allow USWDS styles to cascade properly.
 * Provides slots for maximum customization while offering sensible defaults.
 *
 * @element usa-base-template
 *
 * @slot skipnav - Custom skip navigation (defaults to standard skip link)
 * @slot banner - Custom government banner (defaults to standard banner)
 * @slot header - Site header content
 * @slot main - Main page content
 * @slot footer - Site footer content
 * @slot identifier - Government identifier (defaults to standard identifier)
 *
 * @fires {CustomEvent} template-ready - Fired when template initializes
 *
 * @example Basic usage with slots
 * ```html
 * <usa-base-template>
 *   <div slot="header">
 *     <usa-header title="My Agency"></usa-header>
 *   </div>
 *   <div slot="main">
 *     <h1>Welcome</h1>
 *     <p>Main content goes here.</p>
 *   </div>
 *   <div slot="footer">
 *     <usa-footer></usa-footer>
 *   </div>
 * </usa-base-template>
 * ```
 *
 * @example With properties for defaults
 * ```html
 * <usa-base-template
 *   skip-text="Skip to main content"
 *   show-banner
 *   show-identifier
 * >
 *   <div slot="main">Content</div>
 * </usa-base-template>
 * ```
 *
 * @uswds-template https://designsystem.digital.gov/templates/
 */
export declare class USABaseTemplate extends LitElement {
    protected createRenderRoot(): this;
    /**
     * Page language attribute
     */
    lang: string;
    /**
     * Whether to show the government banner
     */
    showBanner: boolean;
    /**
     * Whether to show the identifier at the bottom
     */
    showIdentifier: boolean;
    /**
     * Text for the skip navigation link
     */
    skipText: string;
    /**
     * Target for the skip navigation link
     */
    skipHref: string;
    /**
     * Domain name for the identifier (e.g., "example.gov")
     */
    domain: string;
    /**
     * Agency name for the identifier
     */
    agency: string;
    /**
     * Parent agency name for the identifier
     */
    parentAgency: string;
    /**
     * Parent agency URL for the identifier
     */
    parentAgencyHref: string;
    connectedCallback(): void;
    updated(changedProperties: Map<string, any>): void;
    firstUpdated(changedProperties: Map<string, any>): void;
    /**
     * Check if a slot has content
     */
    private hasSlotContent;
    /**
     * Render skip navigation
     */
    private renderSkipNav;
    /**
     * Render government banner
     */
    private renderBanner;
    /**
     * Render identifier
     */
    private renderIdentifier;
    render(): import('lit-html').TemplateResult<1>;
    /**
     * Public API: Get main content element
     */
    getMainContent(): HTMLElement | null;
    /**
     * Public API: Focus main content (for skip link)
     */
    focusMainContent(): void;
}
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